Compensating for position errors in displacement transducers
US8222891B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 1, 2009 |
| Grant date | Jul 17, 2012 |
| Priority date | — |
| Expiry date | Aug 21, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/24476
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods of compensating for position errors due to signal scaling, linearity, and offset between first and second members in a displacement transducer are provided, including: producing a first signal at the first member; producing a second signal at the first member; modulating the first signal at the second member to include at least one region with an invariant amplitude as the first and second members are displaced relative to one another along a measurement axis; determining a relation between a sample of the second signal and the invariant amplitude of the first signal as an indication of an error parameter; and generating a compensated sample based upon the determined relation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.